[jdk26] RFR: 8374743: G1 starts a concurrent mark when allocating humongous objects during initialization

Mon Jan 12 08:48:46 UTC 2026

Hi all,

  This pull request contains a backport of commit [fb13abef](https://github.com/openjdk/jdk/commit/fb13abef44d535ebc4535921fd4eb0f285030465) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

  The commit being backported was authored by Thomas Schatzl on 12 Jan 2026 and was reviewed by Erik Österlund, Ivan Walulya, Stefan Johansson and Aleksey Shipilev.

Thanks!

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Commit messages:
 - Backport fb13abef44d535ebc4535921fd4eb0f285030465

Changes: https://git.openjdk.org/jdk/pull/29160/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29160&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374743
  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/29160.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29160/head:pull/29160

PR: https://git.openjdk.org/jdk/pull/29160